Best High-Purity Soda Feldspar (Albite, NaAlSi₃O₈) — The World's Most Essential Ceramic & Glass Flux By Aalok Overseas India

"Soda feldspar from India — specifically the albite-rich deposits of Rajasthan — is the global benchmark for Na₂O consistency, low iron, and competitive pricing. No other source delivers this combination at scale for ceramic and glass manufacturers worldwide."

— Aalok Overseas Technical Division · www.feldsparindia.com

Soda feldspar is the preferred flux for fast-fire single-cycle wall tile (monocottura) production. Its lower melting onset (~1050°C vs ~1150°C for K-spar) allows faster firing cycles and reduced energy consumption — critical for competitive tile manufacturing in Turkey, Italy, Spain, India, China, and Brazil.

Soda feldspar provides the lowest melt viscosity among feldspars — resulting in fluid, self-levelling glazes. It is the standard flux in transparent, satin, and many opaque white glaze formulas. Na₂O's higher coefficient of thermal expansion (vs K₂O) must be balanced with SiO₂ and Al₂O₃ for glaze fit.

In glass batch formulations, albite/soda feldspar provides Al₂O₃ (improves chemical durability and prevents devitrification) and Na₂O (as partial replacement for soda ash) simultaneously — making it more economical than adding these oxides separately. Used in float glass, container glass, and fibreglass.

Soda feldspar blended with potash feldspar (typically 30–40% Na-spar in the mix) provides balanced flux behaviour and improved glaze fluidity for sanitaryware casting bodies. It reduces firing temperature while maintaining the vitrification and water absorption (<0.5%) standards required for vitreous china.

Soda feldspar powder (200M–325M) is used as a functional extender in architectural paints, anti-corrosion primers, and industrial coatings. Its platelet-like particle shape improves scrub resistance and barrier properties. Its Mohs 6–6.5 hardness adds durability to exterior formulations.

Feldspar powder acts as an inert filler in adhesives, tile grouts, wall putty, and caulking compounds — providing body, hardness, and dimensional stability. Its chemical inertness (resistant to acids, alkalis, and weathering) makes it ideal for long-service construction applications.

🏭 Key Industries Using Soda Feldspar — In Their Language

QWhat is the CAS number for soda feldspar / albite? Is it the same as feldspar?

AThere are two relevant CAS numbers: CAS 12244-10-9 is the specific CAS for Albite (the pure mineral NaAlSi₃O₈). CAS 68476-25-5 is the broader CAS for Natural Feldspar (all types — used on most MSDS/SDS in industry). For customs declarations and REACH SDS Section 3, use CAS 68476-25-5 as the primary identifier with CAS 12244-10-9 as the specific mineral phase. Aalok Overseas provides fully compliant SDS with both CAS numbers declared correctly, accepted by customs in EU, USA, GCC, ASEAN, and all major import markets.

QWhat Na₂O% should I specify when buying soda feldspar for wall tile production?

AFor standard single-fire wall tile (monocottura, 1050–1100°C): specify Na₂O minimum 9%, Fe₂O₃ maximum 0.12%, mesh 200M–325M. For premium white wall tile: Na₂O 10%+, Fe₂O₃ <0.08%, whiteness 82%+. Always verify the combined alkali (Na₂O + K₂O) as a cross-check — a true high-quality soda feldspar should show Na₂O+K₂O total of 10–13% with Na₂O dominant. Aalok Overseas provides Na₂O-guaranteed lots with NABL XRF verification on every shipment.

Qفلدسبار الصودا الهندي — ما هي المواصفات المطلوبة لصناعة السيراميك؟ (Arabic)

Aنوفر فلدسبار الصودا (ألبيت) عالي النقاء من راجستان، الهند بالمواصفات التالية: Na₂O: 9–11% · Fe₂O₃: أقل من 0.10% · SiO₂: 65–69% · Al₂O₃: 19–21%. يُستخدم في: صناعة البلاط · الخزف الزجاجي · زجاج الصوبة · الأواني الصحية · الدهانات. نصدّر إلى السعودية والإمارات وقطر والكويت وعُمان والبحرين ومصر والمغرب وسائر الدول العربية. للحصول على عينة مجانية وشهادة تحليل: exports@aalokoverseas.com | واتساب +91-9004229525

Q印度钠长石供应商 — 釉料用钠长石的规格要求是什么？ (Chinese)

A我们向中国陶瓷釉料、玻璃和建材企业供应高纯度钠长石：Na₂O 9–11%，Fe₂O₃ <0.10%，SiO₂ 65–68%，Al₂O₃ 19–21%，目数200M–500M可选。适用于：透明釉料 · 墙砖和地砖坯体 · 玻璃批次 · 卫生洁具。提供NABL认证COA、GHS SDS、产地证（AIFTA/GSP）。联系：exports@aalokoverseas.com | WhatsApp +91-9004229525

QHindistan'dan soda feldspat tedarikçisi — seramik için hangi özellikler gerekli? (Turkish)

AAalok Overseas olarak Rajasthan, Hindistan'dan yüksek saflıkta soda feldspat (albit) ihraç ediyoruz: Na₂O: %9–11 · Fe₂O₃: <%0.10 · Beyazlık: %82–89. Türkiye'nin seramik karo, fayans ve cam sektörlerine düzenli ihracat yapıyoruz. AIFTA preferanslı tarife ve tam ihracat belgesi (COA NABL, GHS SDS, Menşe Şahadetnamesi) ile teslimat yapılır. Numune ve fiyat teklifi için: exports@aalokoverseas.com | WhatsApp +91-9004229525

QWhat documents does Aalok Overseas provide for customs clearance of soda feldspar?

AEvery shipment includes: (1) COA — NABL-accredited XRF analysis (all 9 oxides + whiteness + moisture + mesh). (2) MSDS/SDS — GHS Rev.7, 16-section, CAS 68476-25-5 + 12244-10-9 declared, RCS hazard noted. (3) Certificate of Origin — standard CO, AIFTA Form AI (zero/reduced duty for ASEAN), GSP Form A (EU/US/Canada/Japan preferential). (4) Commercial Invoice, Packing List, Bill of Lading. (5) Phytosanitary certificate if required by importing country. All documents accepted by customs in EU, GCC, ASEAN, USA, UK, Australia, and Africa.

QWhat is the AIFTA benefit for soda feldspar from India to ASEAN countries?

AUnder the ASEAN-India Free Trade Agreement (AIFTA), feldspar (HS 2529.10.00) from India qualifies for preferential (zero or reduced) import duty in Indonesia, Malaysia, Thailand, Vietnam, Philippines, Myanmar, Singapore, Brunei, Laos, and Cambodia. The Form AI Certificate of Origin (issued by Indian Chambers of Commerce / FIEO) must accompany the shipment to claim this benefit. Buyers in ASEAN can save 3–10% import duty per shipment. Aalok Overseas arranges all AIFTA documentation as standard for ASEAN buyers. Contact us for country-specific duty rate details.